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Colorimetric radiation detector

a colorimetric radiation and detector technology, applied in the field of radiation detection, can solve the problems of high cost, high cost, and difficulty in interpreting signals

Active Publication Date: 2020-08-13
UNM RAINFOREST INNOVATIONS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a special kind of detector that can measure the color of radiation. It works by using a chemical called a dye molecule that changes color when it reacts with a chemical called a metal halide. This change in color can be measured without needing to heat up the detector and use a special device. This invention is different from other detectors because it measures the color of radiation directly, without needing to collect the light and measure it later.

Problems solved by technology

Current dosimeters (radiographic films, scintillation detectors, ion chambers) suffer many drawbacks: difficulty interpreting signals, high cost, complexity of operation, and, they are often single-point detectors.
While this is an acceptable process, the need for a hazardous Cl-based solvent to quench the fluorescence limits its utility in different surfaces or architectures.
Further, these relatively inexpensive materials suffer from poor sensitivity and only function in the liquid state.

Method used

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Embodiment Construction

[0010]The present invention is directed to a radiation-induced fluorescence quenching method and colorimetric radiation detector with enhanced sensitivity / quenching behavior to enable remote detection of radiation. The present invention uses radiation-induced fluorescence quenching of organic chemical fluorophores and chemical-amplification, rather than a photomultiplier tube, for detection. The quenched luminosity can be remotely detected using commercial laser probes due to the high-contrast change upon exposure. When used for radiation detection, the technology can remotely monitor low doses of radiation that can be easily detected in a passive, continuous (infinite) mode while encompassing a large physical area.

[0011]In general, the colorimetric radiation detector of the present invention comprises a metal halide (MX) that decomposes upon exposure to radiation; and a dye whose fluorescence is quenched by a product (M or X) of the metal halide decomposition, as shown in FIG. 1. T...

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Abstract

A low cost, rapid, flexible radiation detector uses inorganic metal halide precursors and dyes that respond to self-quenching hybrid scintillation. Remote, high-contrast, laser sensing can be used to determine when exposure of the detector to radiation occurs (even temporally).

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of U.S. Provisional Application No. 62 / 803,880, filed Feb. 11, 2019, which is incorporated herein by reference.STATEMENT OF GOVERNMENT INTEREST[0002]This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy / National Nuclear Security Administration. The Government has certain rights in the invention.FIELD OF THE INVENTION[0003]The present invention relates to radiation detection and, in particular, to a direct-reading colorimetric radiation detector.BACKGROUND OF THE INVENTION[0004]Current dosimeters (radiographic films, scintillation detectors, ion chambers) suffer many drawbacks: difficulty interpreting signals, high cost, complexity of operation, and, they are often single-point detectors. Colorimetric radiation detectors produce a change in color or absorption when exposed to radiation due to the presence of one or more photochrom...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G01T1/105G01T1/204
CPCG01T1/2047G01T1/105G01T1/2045G01T1/02G01T1/204
Inventor BOYLE, TIMOTHY J.GARZON, FERNANDO HENRY
Owner UNM RAINFOREST INNOVATIONS